Gameloft games not installing android lollipop

Hello all there.
I am getting a problem here on my phone that none of the Gameloft games are installing. Other games are installed successfully but gameloft aren't either by playstore or by manually downloading. It always shows error apk not installed. My android version is lollipop 5.1 with kernal versiom 3.10.65. What should i do, the only solution to this is factory reset but it again occurs after some time of factory reset.
Help please.